On Jan 9, 2008 8:44 AM, Mike Fiorino <mfi...@gm...> wrote:
> dear arlindo,
>
> i'm back in the office after the holidays in CA and finally grabbed the
> latest pygrads... i also install PIL..
>
How about the basemaps. Because the map datasets it is a relatively large
tarball they do not include it in the standard Matplotlib, you need an
additional install. See the readme file.
>
> when i try running the examples:
>
> kishou.nhc.noaa.gov[W2]:/home/work/wxmap2/trunk/src/opengrads/pygrads-
> 1.0.6/examples
> 208 > ./galab_examples.py
> Traceback (most recent call last):
> File "./galab_examples.py", line 149, in ?
> ga = GaLab(Bin='gradsnc',Window=False,Echo=False)
> NameError: name 'GaLab' is not defined
>
This usually means that you do not have some of the dependencies. I
designed the grads package in a way that when you import it, only imports
modules that *can* are imported; in retrospect, it is perhaps too quiet.
Here is how to diagnose the problem: start pygrads and at the ga-> prompt
type "import galab", the error messages should tell you what you are
missing.
>
> also in checked the tests/grads_tests.sh and it looks hardwired for a
> particular grads/src?
>
Yeah, "grads_tests.sh" is something Pat introduced specifically for the
"make check" in autotools. Run "grads_tests.py" instead. Outside the GrADS
build environment you will need to specify the location of your grads
binaries. Type "grads_tests.py -h" for more info. However, these tests are
meant to test the grads binaries and only uses module gacore.py.
>
> some news from CA:
>
> bob drach says the lab is finally acting on converted lats to
> opensource; not sure when but at least it's in the works.
This is great news! Pat will finally be able to have a complete Fedora
package.
>
> bob was very interested in pygrads, especially passing data to/from
> grads/python. bob also was surprised that you think perl is faster with
> numbers the python and numpy, his impression was that python was on par
> with other languages.
I read this in a couple of places, including a article implementing fractal
algorithms. Although to be taken with a grain of salt, I heard the same in
the PDL list as well. It would be nice to come up with a benchmark relevant
to our problem. I like Matplotlib, but performance is lousy compared to
GrADS.
> i'm glad to see you getting into python, i have a
> lot of legacy grads scripts that i would like to convert over...
>
It would be nice to inline them. Something like:
def test(arg):
return ga.inline(arg,
"""
function test(arg)
i = 3*arg
return i
""")
So,
>>> print test(7)
21
We just need a version of run that reads from stdin. (I am avoiding exchange
files for performance reasons). It may be less work than convert a bunch of
scripts...
>
> thanks and best regards, mike
>
Let me know if basemaps fixes your problem.
Cheers!
Arlindo
--
Arlindo da Silva
da...@al...
|
